Experimental study on miniaturization of surface electrode for use in measurments of EMG.

Abstract

This paper investigated on changes of the surface EMG according to miniaturization of the electrodes (6mmφ, 4mmφ, 2mmφ) and the difference between monopolar and bipolar derivation of EMG during the mastication using these small size electrodes.

The findings were as follows:

1. 4mmφ size electrode was proper to get balanced EMG.

2. In order ot achieve these ends as effectively, the electrode was improved an indirect floating type (Fig.1).

3.There is no change in accurately at monopolar derivation compared with bipolar derivation.